wilkes



(No Model.) 2 Sheets--Sheet 2. G. WILKES 8v F. EDWARDS.

ANTI-FRICTION THRUST BEARING.

No. 482,430. Patented Sept. 13, 1892.

l/ll/l/ I I Ill/[[42 :rzns ca. Pnmommm. WASHINGTON Untrra STATES GEORGEVILKES AND FREDERICK EDWVARDS, OF SOUTHAMPTON, ENGLAND.

ANTIFRICTION TH RUST-BEARING.

SPECIFICATION forming part of Letters Patent No. 482,430, datedSeptember 13, 1892. Application filed May 3, 1892. Serial No. 431,695.(No model.) Patented in England September 11, 1890, No. 14,317.

T0 to whom it may concern.-

Be it known that we, GEORGE WILKES and FREDERICK EDWARDS, residing atSouthampton, England, have invented an Improvement in AntifrictionThrust-Bearings, (which has been patented in part in Great Britain underNo. 14,317, dated the 11th of September, 1890,) of which the followingis a specification.

Our invention relates to antifriction-bearings for taking the end-thrustof shafts, such as a propeller or vertical and other shafts.

Our invention consists in the special arrangement and construction ofparts of such a device, whereby the result may be obtained in anefficient manner with a minimum loss of power due to friction.

In order that our invention may be the better understood, we will nowdescribe it in relation to the accompanying drawings, reference beinghad to the letters and figures marked hereon.

Like letters and numerals refer to like parts in the various figures.

The particular bearing we will describe is one ad apted to carryconsiderable end-thrust.

Figure 1 is a side elevation of the thrustbearing complete. Fig. 2 isaplan of the same. Fig. 8 is a sectional end view on line yy, Fig. 1.Fig. at is a detail view of the rollers and carrying-frame. Fig. 5 is adetail view of one of the thrust-plates. same on line 00 ac, Fig. 5.Fig. 7 shows the method of keying the thrust-plate to shaft, the Viewbeing a section on line y y of Fig.8. Fig. 8 is a detail side view ofthe divided disk on the shaft.

Upon the shaft A we arrange one or more disk or shaft plates B atintervals along the shaft, so as to be rigidly fixed thereto and turnwith the said shaft; and for convenience we prefer to construct thesedisk-plates B in at least two or in as many sectional parts as may bedesired. These sectional parts are bolted together by bolts 1) b and aresupported between collars O, which form part of the shaft A. To preventany possibility of the said plates B turning around on the shaft, we cuta keyway through the disk-plate B and the said collars O, which does notthus reduce the strength of the shaft, and we fit a doublegibbed key 0in the said keyway with the gibs coming up, one on either side of theplate Fig. 6 is a section of the The plates D are maintained in positionand resist the thrust through the medium of screwed bolts G, with nuts 9supported in and attached to lugs H on the frame E. By the means of thenuts g the plates D can be adj usted according to requirements intodefinite positions.

The plates B have on each side an annular groove 9, preferably of aspecific curved shape, hereinafter more fully described, and the platesD have a similar groove on one side e.

In the spaces between the plates B and D we arrange a collar K, alsodivided into two sectional parts and bolted together about the shaft A.This collar K carries pivotally the antifriction rollers L, which engagewith and roll within the annular grooves e e on the plates B and D,respectively, and thus the thrust is transmitted from the shaft Athrough the plates B, rollers L, plates D, and bolts G, to the frame E.The frame E is made, preferably, of a trough form, open at the top, andthe thrust-plates D are bedded down upon a planed face, as shown in Fig.3.

The particular conformation of groove and corresponding shape of theedge of rollers that we find it most useful to employ is that of theinvolute curve, so that it will be noticed that the two sides of theroller periphery and the groove are not symmetrical, but that onesideviz., the innermost, has an easy curve, and the other, or outermost,a much sharper curve. The particular method of constructing and applyingthis curve to the periphery of the wheels and to the grooves is thatdescribed in the specification of United States Letters Patent, No.183,729, dated October 24, 187 6.

It will be noticed that the nuts is upon the journals M, carried by thecollar K, do not require to touch the rollers L or to be arranged totake any outward thrust from the said rollers, as such is taken by theperiphery of the rollers themselves at the sharp curved outer ed ge ofthe same upon the sharp curved outer edge of the grooved path of theplates B and D. Thus the whole of the friction of the device is rollingfriction. It will be noticed that the openings 20 in the sectionalplates D for the adj listing-rods are between the meeting faces of thesaid sections, one-half being formed in each. They are locateddirectlyadjacent to the bolts (1 for holding the two sections together.

Having now described our invention, what we claim is- 1. In combination,the frame, the shaft journaled therein, the plate B, fixed to the shaft,the plate D, fixed to the frame, the collar K, loose on the shaft andcomprising the central hub part, and the journals extending radiallyabout the said hub and free at their" outer ends, the removable nuts onthe said journals, and the antifriction-rollers held re niovably on'saidjournals by the said nuts, the said plates B and D having grooves inwhich the rollers travel,said grooves being arranged to hold the rollersout of contact with the nuts, substantially as described.

2. In combination, the frame, the shaft, the plate D about the shaft,fixed to the frame, the

collar loose on the shaft and carrying antifriction-rollers, the plate Bon the shaft, and the means for holding the said plate B rigidly to theshaft, consisting of the collars O, fixed on the shaft and havingnotches, the key to extend through the said notches and along thesurface of the shaft, the said plate B being formed in sections adaptedto fit between the collars and having a key-seat to fit over the key,substantially as described.

3. In combination, the shaft, the frame, the plate B on the shaft, theloose collar having the antifriction-rollers, the plate D, formed insections and having the openings 20 between said sections, the bolts 01for securing the two sections together, and the screws G, passingthrough the openings 20 and connecting the plate D to the frame,substantially as described.

In testimony whereof We have signed our names to this specification inthe presence of two subscribing witnesses.

GEORGE WILKES. FREDK. EDVAR'DS.

Witnesses:

JASPER P. BRADLEY, JOSEPH HUNT.

